Irregular galaxies
... to be the result of a density wave radiating from the center of the galaxy • Bars are thought to be a temporary phenomenon in the life of spiral galaxies, the bar structure decaying over time, transforming the galaxy from a barred spiral to a "regular“, or “classical” spiral pattern. ...
... to be the result of a density wave radiating from the center of the galaxy • Bars are thought to be a temporary phenomenon in the life of spiral galaxies, the bar structure decaying over time, transforming the galaxy from a barred spiral to a "regular“, or “classical” spiral pattern. ...
After Dark M S
... Dr. Amalia Hicks Galaxies do not just come in ones or two’s. Sometimes they occur in groups that contain tens, hundreds, and even thousands of galaxies. What do we know about galaxy clusters and how they were formed? ...
... Dr. Amalia Hicks Galaxies do not just come in ones or two’s. Sometimes they occur in groups that contain tens, hundreds, and even thousands of galaxies. What do we know about galaxy clusters and how they were formed? ...
Presentation
... Include the most massive low redshift galaxies. Little growth from recent star formation. Image stolen from SDSS ...
... Include the most massive low redshift galaxies. Little growth from recent star formation. Image stolen from SDSS ...
galaxies, galaxies, galaxies!
... … and there are more of these types of galaxies than any other type! There may be lots of them, but they are not very luminous or very massive, so they do not contribute to the total integrated galaxy luminosity or mass in the universe. ...
... … and there are more of these types of galaxies than any other type! There may be lots of them, but they are not very luminous or very massive, so they do not contribute to the total integrated galaxy luminosity or mass in the universe. ...
Galaxies Presentation
... – Smooth,featureless appearance and appear basically the same from any angle. – Made up of old stars and containing a small amount of gas, and dust. – Most are yellow and red because they do not contain young stars. – Vary in size from small to extremely large ...
... – Smooth,featureless appearance and appear basically the same from any angle. – Made up of old stars and containing a small amount of gas, and dust. – Most are yellow and red because they do not contain young stars. – Vary in size from small to extremely large ...
Great Migrations & other natural history tales
... 2. Prominence of spiral arms, arm-interarm contrast (increases) 3. Visibility and number of population I objects such as: H II regions, OB associations, dark lanes of dust (increases) 4. Pitch angle (openness) of spiral arms ...
... 2. Prominence of spiral arms, arm-interarm contrast (increases) 3. Visibility and number of population I objects such as: H II regions, OB associations, dark lanes of dust (increases) 4. Pitch angle (openness) of spiral arms ...
Type Ia Supernovae in the SDSS Strip 82
... Properties of Host galaxy -(u-r) & (g-r) color -Luminosity -Local density -Distance to r1 ...
... Properties of Host galaxy -(u-r) & (g-r) color -Luminosity -Local density -Distance to r1 ...
Lecture #2
... (near-IR, in this case) but there’s no guarantee that the morphological type will be the same in the visible (here Hubble sequence is defined) and the other wavelengths. On the contrary, there are sometimes bars and rings which are revealed only in the UV, IR, or radio wavelengths. ...
... (near-IR, in this case) but there’s no guarantee that the morphological type will be the same in the visible (here Hubble sequence is defined) and the other wavelengths. On the contrary, there are sometimes bars and rings which are revealed only in the UV, IR, or radio wavelengths. ...
Galaxy Classification
... • Ellipticals - galaxies are pure bulge, no disk component • Spirals- galaxies contain varying amounts of disk component •from mostly bulge with barely detectable disks to those totally dominated by their disks Irregulars - galaxies are… well. Odd ...
... • Ellipticals - galaxies are pure bulge, no disk component • Spirals- galaxies contain varying amounts of disk component •from mostly bulge with barely detectable disks to those totally dominated by their disks Irregulars - galaxies are… well. Odd ...
The Milky Way - Zumbroclassroom
... The Milky Way, like all other galaxies, is a complex system of ________, _________, ___________ and other matter, bound together by ________. They are often classified by their _______. The three main classifications of galaxies are ___________, __________, and ___________. Our galaxy is a _________ ...
... The Milky Way, like all other galaxies, is a complex system of ________, _________, ___________ and other matter, bound together by ________. They are often classified by their _______. The three main classifications of galaxies are ___________, __________, and ___________. Our galaxy is a _________ ...
The Deep Structure of Dark Matter
... But while useful for dense groups & cluster mass scales, these are much less sensitive to large-scale structure at lower densities. For the foreseeable future, we are limited to galaxy redshift surveys. ...
... But while useful for dense groups & cluster mass scales, these are much less sensitive to large-scale structure at lower densities. For the foreseeable future, we are limited to galaxy redshift surveys. ...
Intro to Astronomy Power Point
... Irregular galaxies lack any specific form and contain stars, gas and dust generally associated with a youth. The irregular galaxy at right is the Large Magellanic Cloud, a satellite of the Milky Way located about 180,000 light years from the sun. The LMC is about 60,000 light years across. The brigh ...
... Irregular galaxies lack any specific form and contain stars, gas and dust generally associated with a youth. The irregular galaxy at right is the Large Magellanic Cloud, a satellite of the Milky Way located about 180,000 light years from the sun. The LMC is about 60,000 light years across. The brigh ...
Types of Galaxies - BirdBrain Science
... Look at those stars! What shape is that? It's, sort of a . . . That looks like a . . . Hmm. Have you ever tried to catch a ball that sort of wobbled out of its path through the air? When you get your hands on it, you can see that it is not very round. Irregular galaxies do not have a shape like a ci ...
... Look at those stars! What shape is that? It's, sort of a . . . That looks like a . . . Hmm. Have you ever tried to catch a ball that sort of wobbled out of its path through the air? When you get your hands on it, you can see that it is not very round. Irregular galaxies do not have a shape like a ci ...
Galaxies - senwiki
... Elliptical galaxies are, simply: -galaxies with an elliptical shape Their shapes range from almost spherical to footballshaped, to long and cylindrical (like a pencil) -The largest galaxies in the universe are elliptical -Contain very little dust-they have fewer young stars than spiral galaxies. Ell ...
... Elliptical galaxies are, simply: -galaxies with an elliptical shape Their shapes range from almost spherical to footballshaped, to long and cylindrical (like a pencil) -The largest galaxies in the universe are elliptical -Contain very little dust-they have fewer young stars than spiral galaxies. Ell ...
Chapter 30.3 Star Groups
... – Imaginary animals e.g.Draco, “The Dragon” – Ancient Gods – Legendary Heroes ...
... – Imaginary animals e.g.Draco, “The Dragon” – Ancient Gods – Legendary Heroes ...
In Far Off Distant Galaxies: Classification by Shape
... Of any of the elliptical galaxies seen in objects 1 through 10 above, rank them from most elliptical in shape to least elliptical. MOST ...
... Of any of the elliptical galaxies seen in objects 1 through 10 above, rank them from most elliptical in shape to least elliptical. MOST ...
Document
... bulge strength and tightness of spiral arms - Sa: prominent bulge and tight but indistinct arms - Sb: less prominent bulge and looser arm structure - Sc: small bulge and loose and clearly seen arms i.e. from Sa to Sc, from tight to unwinding arms • Barred Spirals – bar-shaped nucleus (jet??); as man ...
... bulge strength and tightness of spiral arms - Sa: prominent bulge and tight but indistinct arms - Sb: less prominent bulge and looser arm structure - Sc: small bulge and loose and clearly seen arms i.e. from Sa to Sc, from tight to unwinding arms • Barred Spirals – bar-shaped nucleus (jet??); as man ...
Document
... Elliptical galaxies are affectionately called “E” galaxies. They can be extremely large and massive. This galaxy is 2 million light years across. The size of the Milky Way in comparison! ...
... Elliptical galaxies are affectionately called “E” galaxies. They can be extremely large and massive. This galaxy is 2 million light years across. The size of the Milky Way in comparison! ...
Kinematics of the galaxies
... Evidence: mainly optical characteristics (tails, counter-rotating cores, dust lanes) ...
... Evidence: mainly optical characteristics (tails, counter-rotating cores, dust lanes) ...
Galaxies and the Universe
... • The arms consist of bright stars, dust and gas. • The Milky Way is a spiral galaxy. • Can be normal or barred • Normal: spiral starts close to center of galaxy • Barred: spiral arms extend from a large bar of stars and gas that passes through the center of the galaxy. ...
... • The arms consist of bright stars, dust and gas. • The Milky Way is a spiral galaxy. • Can be normal or barred • Normal: spiral starts close to center of galaxy • Barred: spiral arms extend from a large bar of stars and gas that passes through the center of the galaxy. ...
Does size matter (in the SFRs)?
... sented the results on the SFRs of two small spiral galaxies with very similar HI content but with different size. According to Kennicutt (1998) they both should be galaxies are more the same locations of the graph, and have very similar values of the SFRs. On the contrary of course, UGC 5296 is not ...
... sented the results on the SFRs of two small spiral galaxies with very similar HI content but with different size. According to Kennicutt (1998) they both should be galaxies are more the same locations of the graph, and have very similar values of the SFRs. On the contrary of course, UGC 5296 is not ...
Galaxies Powerpoint
... located in one of the outer arms (Orion’s Arm) of the galaxy. The distance from the Sun to the center of the galaxy is about 30,000 light years. • All objects in the galaxy revolve around ...
... located in one of the outer arms (Orion’s Arm) of the galaxy. The distance from the Sun to the center of the galaxy is about 30,000 light years. • All objects in the galaxy revolve around ...
Main Types of Galaxies
... located in one of the outer arms (Orion’s Arm) of the galaxy. The distance from the Sun to the center of the galaxy is about 30,000 light years. • All objects in the galaxy revolve around ...
... located in one of the outer arms (Orion’s Arm) of the galaxy. The distance from the Sun to the center of the galaxy is about 30,000 light years. • All objects in the galaxy revolve around ...
Great Migrations & other natural history tales
... 2. Prominence of spiral arms, arm-interarm contrast (increases) 3. Visibility and number of population I objects such as: H II regions, OB associations, dark lanes of dust (increases) 4. Pitch angle (openness) of spiral arms ...
... 2. Prominence of spiral arms, arm-interarm contrast (increases) 3. Visibility and number of population I objects such as: H II regions, OB associations, dark lanes of dust (increases) 4. Pitch angle (openness) of spiral arms ...
Atlas of Peculiar Galaxies
The Atlas of Peculiar Galaxies is a catalog of peculiar galaxies produced by Halton Arp. A total of 338 galaxies are presented in the atlas, which was originally published in 1966 by the California Institute of Technology.The primary goal of the catalog was to present photographs of examples of the different kinds of peculiar structures found among nearby galaxies. Arp realized that the reason why galaxies formed into spiral or elliptical shapes was not well understood. He perceived peculiar galaxies as small ""experiments"" that astronomers could use to understand the physical processes that distort spiral or elliptical galaxies. With this atlas, astronomers had a sample of peculiar galaxies that they could study in more detail. The atlas does not present a complete overview of every peculiar galaxy in the sky but instead provides examples of the different phenomena as observed in nearby galaxies.Because little was known at the time of publication about the physical processes that caused the different shapes, the galaxies in the atlas are sorted based on their appearance. Objects 1–101 are individual peculiar spiral galaxies or spiral galaxies that apparently have small companions. Objects 102–145 are elliptical and elliptical-like galaxies. Individual or groups of galaxies with neither elliptical nor spiral shapes are listed as objects 146–268. Objects 269–327 are double galaxies. Finally, objects that simply do not fit into any of the above categories are listed as objects 332–338. Most objects are best known by their other designations, but a few galaxies are best known by their Arp numbers (such as Arp 220).Today, the physical processes that lead to the peculiarities seen in the Arp atlas are now well understood. A large number of the objects are interacting galaxies, including M51 (Arp 85), Arp 220, and the Antennae Galaxies (NGC 4038/NGC 4039, or Arp 244). A few of the galaxies are simply dwarf galaxies that do not have enough mass to produce enough gravity to allow the galaxies to form any cohesive structure. NGC 1569 (Arp 210) is an example of one of the dwarf galaxies in the atlas. A few other galaxies are radio galaxies. These objects contain active galactic nuclei that produce powerful jets of gas called radio jets. The atlas includes the nearby radio galaxies M87 (Arp 152) and Centaurus A (Arp 153).